FASTENERS & SEALING
Strengthening
fsstainlessteelasteners A
Silicone elastomer meets
hardness and good corrosion resistance. The technology
new innovation that boosts the hardness of stainless steel fasteners has won one of the internationally recognised
R&D 100 Awards 2022. Taiwan’s Metal Industries Research
and Development Centre (MIRDC) has developed a new technology that combines the corrosion resistance of stainless steel fasteners with the hardness of carbon steel fasteners. The ‘Corrosion-Resistant, Surface Hardening System Equipment for Austenite Stainless Steel (CRSH)’ has been applied to construction fastener material Austenitic stainless steels to deliver high levels of
works by leveraging precise production controls and a specialised design to treat stainless steel surfaces with gas nitriding, carburising or carbonitriding techniques, which allows the surface hardness to reach in excess of HV 1,200. The hardness is far above that of normal carbon steel while the surface still retains its original corrosion resistance. Able to handle large amounts of complex shapes at any one time, the process is equipped with smart production and systematic service functions to provide low quantity, high variety customised processing of stainless steel fasteners. Having won an R&D 100 Award 2022, the technology is now being applied to fasteners in Taiwan’s semiconductor industry to improve
MIRDC has won an R&D 100 Award 2022
the precision and quality of equipment. Going forwards, the technology will be made available to more companies throughout the country that are producing a variety of applications in the fastener sector, ranging from stainless steel gaskets to self-tapping screws.
For more information visit
www.mirdc.org.tw
NASA specifications A
two-component silicone elastomer has met NASA low outgassing requirements for bonding and sealing
The MasterSil 323AO-LO is a two-component silicone elastomer
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www.engineerlive.com
applications. Master Bond’s MasterSil 323AO-LO is a two-component silicone elastomer with a self-priming feature designed for bonding, sealing and gap filling applications. Suitable for use in the aerospace, electronic, opto-electronic and speciality OEM industries, the elastomer has met NASA’s low outgassing specifications with a thermal conductivity of 1.15-2.30W/(m•K). Electrically insulating
and thermally conductive, MasterSil 323AO-LO is highly flexible with a low tensile
modulus of 500-700psi, an elongation of 50-60%, and a hardness of 70-75 Shore A. This combination of properties enables the elastomer to withstand aggressive thermal cycling and mechanical shock. It also has a relatively high strength profile for a silicone, offering a tensile lap shear strength of 250-350psi at room temperature. As a result, MasterSil 323AO-LO bonds
well to a wide range of substrates, such as metals, composites, glass, ceramics, plastics and other silicones, without imparting residual stress when heat cured. Featuring a paste-like consistency, the elastomer can be used as a gap filling material where minimum flow after application is desired. Available for purchase in standard containers or gun applicator kits, the elastomer is convenient for both manual and automated dispensing within bonding, sealing and gap filling applications.
For more information visit
www.masterbond.com
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